Online Font Subsetter
Reduce web font file size by creating a font subset. Keep only the characters you need, with support for custom characters, Unicode ranges, and a live preview. Boost your site performance and Core Web Vitals.
Supports: TTF, OTF, WOFF, WOFF2
Separate multiple ranges with commas. Useful for including entire character sets (e.g., Latin, CJK).
Export Settings
Font Preview
Upload a font to see a preview.
Why Subset Your Fonts?
🚀 Faster Page Loads
Smaller font files download faster, improving the LCP (Largest Contentful Paint) metric, which is crucial for site performance.
😊 Better User Experience
Users see your text content quicker, reducing wait times, which can lower bounce rates and increase satisfaction.
📈 Improved Web Vitals
Page speed is a key ranking factor for search engines like Google. Optimizing fonts is a powerful way to improve your Core Web Vitals score.
Frequently Asked Questions (FAQ)
Is my font file secure? Is it uploaded?
Yes, it is 100% secure. All font processing happens locally in your browser. Your font file is never uploaded to our servers, ensuring your data remains private.
Why did my font file get BIGGER after subsetting?
This can happen with very small or highly-optimized original fonts. The tool rebuilds the font file from scratch, and this new structure can sometimes be less compact than the original. If this occurs, it means your font is already very efficient, and you should continue using the original file. Our tool will indicate this and prevent you from downloading the larger file.
Which output format should I choose: OTF or TTF?
For modern web development, both are excellent starting points. After subsetting, it is best practice to convert the resulting font to the .woff2 format for maximum compression. OTF is a more modern format that can contain advanced features, while TTF has slightly broader compatibility with older software. If you're unsure, OTF is a great default choice.
Can I use the subsetted font in commercial projects?
You must adhere to the license of the original font you upload. Subsetting a font does not change its license. Ensure you have the rights to modify and use the font for your purposes.
Your Privacy is Our Priority
This tool runs entirely in your browser. We do not upload, store, or analyze your files. Everything you process stays on your device.